Grain size effect on UV filtering capabilities of Poly (vinyl alcohol) -Bi2O3 nanocomposite coatings

Key Points

• Improved UV filtering is noted in poly(vinyl alcohol)-Bi2O3 nanocomposite coatings with reduced grain size, enhancing protective features.
• Significant enhancements in UV protection efficiencies are observed with grain sizes decreasing below 100 nm, doubling the effectiveness.
• Analysis of nanocomposite properties utilizes a range of physical testing methods to evaluate UV filtering performance and structural integrity.
• Findings suggest that optimizing grain size in coatings could lead to better UV shielding, with potential impacts on material applications.